Surge tank system that mounts insided of OEM BMW fuel tank. Factory fuel pump acts as lift pump to feed surge tank. Surge pumps then feed the engine. Excellent way to add more pump capacity while also protecting from fuel starvation.
Direct bolt-in installation and retains the factory closed loop functionality. Increased engine performance from cleaner inlet air. Prevents oil buildup on intake valves and intercooler. Lowers hydrocarbon emissions. More details available at radiumauto.com.